Science and Technology. Ping, a pulse of sound in active sonar. Pinging, the noise indicative of improper combustion in internal combustion engines. Ping (Chinese: åª), a Taiwanese measure of area. Ping project, a project of the European Molecular Biology network (EMBnet)
Pre-Market Stock Trading. As its name suggests, pre-market stock trading occurs before the stock market opens up for its regular hours of trading at 9:30 a.m ET. Pre-market stock trading takes place between the hours of 8:00 to 9:30 a.m. ET.
Â· just now. Report Abuse. A market order means it is executed at the price in the market. A limit order allows you to specify a certain price you want for the order--say, you only want to buy the stock at a price of $11.00 or lower.A stop order usually means that you are placing an order ahead of time that if your stock drops below a certain price, it will automatically be sold. just now. Report Abuse. A market order means it is executed at the price in the market. A limit order allows you to specify a certain price you want for the order--say, you only want to buy the stock at a price of $11.00 or lower.